samsung-sm8650/android_kernel_samsung_sm8650-modules
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disp: msm: dsi: add widebus support for DSI

Telusuri Sumber 
From Lahaina onwards, for compressed DSI output, widebus should be enabled.
In widebus mode, 6 bytes of data are transmitted per pclk.
For uncompressed output, widebus must be disabled to transmit 3 bytes
of uncompressed data per pclk.

Change-Id: I7fc0bdb2e1678152d57b4cbb8295063a2ba8ae73
Signed-off-by: Rajkumar Subbiah <rsubbia@codeaurora.org>
This commit is contained in:
Rajkumar Subbiah
2020-03-03 17:34:20 -05:00
orang tua c0d4857a81
melakukan 56e041919c
10 mengubah file dengan 96 tambahan dan 25 penghapusan
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31
msm/dsi/dsi_ctrl_hw_cmn.c
Melihat File

@@ -342,6 +342,16 @@ void dsi_ctrl_hw_cmn_set_video_timing(struct dsi_ctrl_hw *ctrl,
reg |= eol_byte_num << 4;
reg |= 1;
DSI_W32(ctrl, DSI_VIDEO_COMPRESSION_MODE_CTRL, reg);
if (ctrl->widebus_support) {
reg = DSI_R32(ctrl, DSI_VIDEO_MODE_CTRL);
reg |= BIT(25);
DSI_W32(ctrl, DSI_VIDEO_MODE_CTRL, reg);
}
mode->h_active = DIV_ROUND_UP(mode->h_active *
mode->pclk_scale.numer,
mode->pclk_scale.denom);
} else {
width = mode->h_active;
}
@@ -388,14 +398,15 @@ void dsi_ctrl_hw_cmn_set_video_timing(struct dsi_ctrl_hw *ctrl,
* setup_cmd_stream() - set up parameters for command pixel streams
* @ctrl: Pointer to controller host hardware.
* @mode: Pointer to mode information.
* @h_stride: Horizontal stride in bytes.
* @cfg: DSI host configuration that is common to both
* video and command modes.
* @vc_id: stream_id
*
* Setup parameters for command mode pixel stream size.
*/
void dsi_ctrl_hw_cmn_setup_cmd_stream(struct dsi_ctrl_hw *ctrl,
struct dsi_mode_info *mode,
u32 h_stride,
struct dsi_host_common_cfg *cfg,
u32 vc_id,
struct dsi_rect *roi)
{
@@ -421,7 +432,7 @@ void dsi_ctrl_hw_cmn_setup_cmd_stream(struct dsi_ctrl_hw *ctrl,
sde_dsc_populate_dsc_private_params(&dsc, intf_ip_w);
width_final = dsc.pclk_per_line;
width_final = dsc.bytes_per_pkt * dsc.pkt_per_line;
stride_final = dsc.bytes_per_pkt;
pkt_per_line = dsc.pkt_per_line;
eol_byte_num = dsc.eol_byte_num;
@@ -436,7 +447,7 @@ void dsi_ctrl_hw_cmn_setup_cmd_stream(struct dsi_ctrl_hw *ctrl,
sde_vdc_intf_prog_params(&vdc, intf_ip_w);
width_final = vdc.pclk_per_line;
width_final = vdc.bytes_per_pkt * vdc.pkt_per_line;
stride_final = vdc.bytes_per_pkt;
pkt_per_line = vdc.pkt_per_line;
eol_byte_num = vdc.eol_byte_num;
@@ -447,13 +458,23 @@ void dsi_ctrl_hw_cmn_setup_cmd_stream(struct dsi_ctrl_hw *ctrl,
height_final = roi->h;
} else {
width_final = mode->h_active;
stride_final = h_stride;
stride_final = mode->h_active * 3;
height_final = mode->v_active;
}
if (dsi_compression_enabled(mode)) {
pic_width = roi ? roi->w : mode->h_active;
height_final = roi ? roi->h : mode->v_active;
if (ctrl->widebus_support) {
width_final = DIV_ROUND_UP(width_final, 6);
reg = DSI_R32(ctrl, DSI_COMMAND_MODE_MDP_CTRL2);
reg |= BIT(20);
DSI_W32(ctrl, DSI_COMMAND_MODE_MDP_CTRL2, reg);
} else {
width_final = DIV_ROUND_UP(width_final, 3);
}
reg_ctrl = DSI_R32(ctrl, DSI_COMMAND_COMPRESSION_MODE_CTRL);
reg_ctrl2 = DSI_R32(ctrl, DSI_COMMAND_COMPRESSION_MODE_CTRL2);